text: #pragma once
  #include "column_task.h"
  #include "dataclean_conf.h"
  #include "cleanup_results.h"
  
  struct cleanup_task
  {
      using arg_type = dataclean_conf;
      using result_type = cleanup_results; 
  
      constexpr cleanup_task() = default;
  
      result_type operator () (const arg_type& conf) const;
  };
  
  